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dexar [7]
4 years ago
14

What is speed of a particle?

Physics
2 answers:
Galina-37 [17]4 years ago
8 0
The speed of a particle is the instantaneous rate at which its distance of travel
is changing.

Over any finite period of time, its speed is:

               (distance traveled) / (time to travel the distance).

The direction of travel is irrelevant to a description of speed.
Mashutka [201]4 years ago
3 0
SPEED = total DIST. traveled / total time taken
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A boat crossing a 153.0 m wide river is directed so that it will cross the river as quickly as possible. The boat has a speed of
irinina [24]

Answer:

201.76266192 m

Explanation:

Distance traveled in the horizontal direction = 153 m

In the vertical direction the distance traveled

\dfrac{4.9\times 153}{5.7}=131.526315789\ m

Total distance from pythagoras theorem

d=\sqrt{153^2+(\dfrac{4.9\times 153}{5.7})^2}\\\Rightarrow d=201.76266192\ m

The total distance the boat will travel to reach the opposite shore is 201.76266192 m

6 0
3 years ago
Which of these refers to tempo?
Lilit [14]
The choice that would best describe the word "tempo" would be letter A which states that it is "a pace of music or speed of beats per minute." In addition, a tempo is an important characteristic of music because it is the one who carries the emotions and feelings of the composer towards the music he/she makes. 
7 0
3 years ago
Read 2 more answers
Help please! Thank you
Vesnalui [34]

Answer:

c

Explanation:

7 0
2 years ago
Engine cylinder has an area of 0.01 m2. The gas exerts a constant pressure of 7.5 * 105 Pa on the piston and moves the piston to
kiruha [24]

Answer:

The positive sign indicates that work is done by the gas.

Explanation:

Let consider that gas inside the cylinder behaves ideally and process is isothermal, so that change in internal energy can be neglected. The engine cylinder is modelled after the First Law of Thermodynamics:

W + P\cdot(V_{in}-V_{out}) = 0

W = P\cdot (V_{out}-V_{in})

W = P\cdot A\cdot \Delta x

W = (7.5\times 10^{5}\,Pa)\cdot (0.01\,m^{2})\cdot (0.04\,m)

W = 300\,kPa

The positive sign indicates that work is done by the gas.

7 0
3 years ago
Do the two cars ever have the same velocity at one instant of time? If so, between which two frames?Check all that apply. A. Car
eimsori [14]

Answer:

D. Cars have the same velocity at one instant of time between dots 4 and 5.

Explanation:

The two cars will eventually have the same velocity and it occurs between 4 and 5. Velocity is normally defined as displacement over time. This shows that a change in the value of either time or displacement will affect the value of the velocity. Thus, at a given time between the points 4 and 5, the two cars have the same value of velocity.

5 0
3 years ago
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